Who doesn't like to feel the refreshing breeze of a fan on a hot summer day? Fans have historically had multiple blades that spin, enclosed by some kind of protective grate. The blades chop the air and push it forward.
So when I saw the first blade-less fan, I was instantly intrigued. How does it work? I can put my arm through the hole? No protective covering? You've got to be kidding me!
It's true. The people at Dyson have done it. Their air multiplier has no blades.
How does it work? Well, don't listen to them because they use a lot of big words that mean nothing to the everyday person. When viewing the cross-section of the fan, it looks like there is a small fan inside the base that sucks in air and pushes it into the circular foil. Since the foil is thin, and the base draws in air, the air is forced out through a small opening, which increases the pressure. Air behind the fan in drawn in through negative pressure.
A very interesting invention!
Dyson Website
